Enhanced Derivatives of RasMol

Chemscape
Chime (free!)
is built upon RasMol, but shows the molecule as a plug-in, within a
Netscape 3.0* web page (not in a separate window) and has many
important enhancements. Highly worth downloading -- installation is
very simple -- so you can take a look at Chime's extraordinary educational potential.

Marco Molinaro at The University of California, Berkeley, MultiCHEM
facility has created an enhanced version,
UCB-RasMol. This is the only version at present
which can load several molecules at once and move them independently.

See also
WebLab from Molecular Simulations, Inc., a promising new program
derived in part from RasMol.